A Prince George’s County man was released Thursday from St. Mary’s jail on personal recognizance after his arrest on charging papers alleging he was traveling at 100 mph the day before in Mechanicsville, and falsely identified himself as a police officer.

William Anthony Matheny, 38, of Temple Hills displayed a silver badge marked “special police,” and identification cards identifying him as a “special police” officer and a security guard, when a state trooper pulled him over last Wednesday afternoon on Route 5, according to charging papers.

Matheny was arrested on a charge of driving under the influence, and while he was being taken to the Maryland State Police barrack in Leonardtown, he repeated that he was a “federal special police” officer, Trooper James Hardesty wrote in a statement of probable cause. The Washington, D.C., Metropolitan Police Department was listed on the back of the two cards that Matheny took out after the traffic stop, court papers state, but the agency told another trooper that Matheny “was not employed as a police officer with them.”

Matheny told a court commissioner, court papers state, that he works as a “protective service officer” in Washington, D.C., for Paragon Systems, identified by its website as a security services management business.

A conviction for falsely impersonating a police officer carries a maximum sentence of two years in prison and a $2,000 fine.

In addition to that offense and DUI, Matheny was charged with speeding, reckless driving and driving with a suspended driver’s license.